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Edge Computing and Self-Hosting: Deploying Close to Users

Deploy self-hosted apps in multiple regions to reduce latency. Edge computing brings your applications closer to users.

edgeperformanceinfrastructure

What Is Edge Computing?


Edge computing runs applications closer to end users instead of in a single centralized data center. If your users are in Tokyo and your server is in New York, every request travels 10,000+ miles. Edge computing puts a server in Tokyo too.


Why Latency Matters


Physics

Light travels at ~200,000 km/s in fiber optic cable. New York to Tokyo is ~11,000 km. Minimum round trip: ~110ms just for the speed of light. In practice, it's 150-200ms.


User Experience

Studies show:

  • 100ms delay: feels instant
  • 300ms delay: noticeable
  • 1000ms delay: user loses focus

    • Edge Strategies for Self-Hosting


    CDN for Static Assets

    Put Cloudflare in front of your server. Static files (images, CSS, JS) are cached at 300+ locations worldwide. Only dynamic requests hit your origin server.


    Multi-Region Deployment

    Deploy your application in multiple regions. Use DNS-based routing (Cloudflare Load Balancing, AWS Route53) to direct users to the nearest instance.


    Database Replication

    Run read replicas near your users. Writes go to the primary database; reads are served locally.


    Edge Functions

    Use Cloudflare Workers for edge logic: authentication, A/B testing, redirects, and personalization. Process at the edge, fetch from origin only when needed.


    When Edge Matters


  • Global user base (users on multiple continents)
  • Latency-sensitive applications (real-time collaboration, gaming)
  • High-traffic static content (media, downloads)

    • When It Doesn't Matter


  • Regional user base (all users in one country)
  • Internal tools (team is in one location)
  • Low-traffic applications
  • Batch processing (latency doesn't matter)

    • The Practical Approach


    For most self-hosters:

    1. Deploy on one server in your primary region

    2. Use Cloudflare CDN for static assets (free)

    3. Only add more regions when you have global users and latency complaints


    Premature edge optimization is a waste. Start simple, measure latency, and add regions only when the data justifies it.